Fuel filter adapter



FIG. 1 is a top perspective view of a fuel filter adapter showing my new design, shown in exploded assembly with a filter head which is shown in broken lines and forming no part of the claimed design;

FIG. 2 is a top perspective view thereof, shown in exploded assembly with a fuel filter which is shown in broken lines and forming no part of the claimed design;

FIG. 3 is a right side view thereof;

FIG. 4 is a bottom view thereof;

FIG. 5 is a top plan view thereof; and,

FIG. 6 is a bottom perspective view thereof. 

The ornamental design for a fuel filter adapter, as shown and described. 